biography
pronunciation:
[hertshprung]
| sex:
| male
|
| lived:
| (1873–1967)
|
| biography:
| Astronomer, born in Frederiksberg, EC Denmark. He trained as a chemical engineer at the Copenhagen Polytechnic. Interested in the chemistry of photography, and in astronomy, he began researching starlight with photographs in 1902, and was appointed as an astronomer at the Potsdam Observatory (1909–19). He had then already shown that for most stars, colour and brightness are related; all later work on the evolution of stars begins with Hertzsprung's work on this relationship. He worked at Leyden University observatory (1919–45), becoming director there in 1935, and remained an active researcher until he was over 90. |
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